epaper test with encoder

Dependencies:   mRotaryEncoder epd1in54

Revision:
0:86a20b448fa5
diff -r 000000000000 -r 86a20b448fa5 mbed-os.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Tue Mar 05 21:45:12 2019 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#ed7fe215002a9c50452acfecda633ce47e00c614